IGCSE Co-ordinated Sciences (9–1) 0973 · Biology · 14

0654.B3.2.01 — State that water diffuses through partially 4 Describe osmosis as the net movement permeable membranes by osmosis of water molecules from a : past paper questions

5 real questionsasked in 2 of the last 10 exam series2020–2024usually: State, Describe

Real questions on 0654.b3.2.01 — state that water diffuses through partially 4 describe osmosis as the net movement permeable membranes by osmosis of water molecules from a

The newest 5 of 5 written questions. Open one to see it on the real paper.

0973/31 · October/November 2024 · Q10a(ii)[2]
State two uses of water in a plant.
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0973/41 · October/November 2024 · Q7a(iv)[1]
State the name of the process that causes the change in length in potato cylinders.
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0973/42 · May/June 2024 · Q10c(ii)[2]
State two uses of water in plant cells.
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0973/42 · May/June 2021 · Q1a[4]
Some plant cells are immersed in a concentrated salt solution. Fig. 1.1 is a photomicrograph showing the appearance of the cells. Fig. 1.1 Complete the sentences using words or phrases from the list to explain the appearance of the cells in Fig. 1.1. Each word or phrase may be used once, more than once or not at all. a...
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0973/31 · October/November 2020 · Q7b[2]
The change in appearance of the plant cells is caused by osmosis. Describe the process of osmosis.
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What examiners said

Many candidates gained full credit for an answer that described the movement of water across a partially permeable membrane.
— Examiner report, October/November 2020, 0973/31 Q7(b) (Cambridge)

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In the syllabus

14 0654.B3.2.01 — State that water diffuses through partially 4 Describe osmosis as the net movement permeable membranes by osmosis of water molecules from a

State that water diffuses through partially 4 Describe osmosis as the net movement permeable membranes by osmosis of water molecules from a region of higher water potential (dilute solution) to a region of lower water potential (concentrated solution), through a partially permeable membrane
State that water moves into and out of cells by osmosis through the cell membrane
Investigate and describe the effects on plant 5 Explain the effects on plant cells of immersing tissues of immersing them in solutions of them in solutions of different concentrations different concentrations by using the terms: turgid, turgor pressure, plasmolysis, flaccid
Explain the importance of water potential and osmosis in the uptake and loss of water by organisms

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